https://sourceware.org/bugzilla/show_bug.cgi?id=32041
--- Comment #1 from Chuang Wang <koule2333 at gmail dot com> ---
mycase:
// caller.cpp
#include <iostream>
extern int hack();
int main()
{
std::cout << hack() << std::endl;
}
// goo.cpp
int hack()
{
int s = 1;
for (int i = 1; i < 9999; ++i) {
s *= i + i;
}
return s;
}
// foo.cpp
#include <map>
#include <string>
std::map<double, std::string> double2String;
void update(double f, const std::string& s) {
double2String[f] = s;
}
std::string query(double f) {
return double2String.at(f);
}
// build.sh
g++ -O3 -fPIC -c foo.cpp
g++ -O3 -fPIC -c goo.cpp
g++ -O3 -fuse-ld=bfd -fPIC --shared -o libxxx.so foo.o goo.o
g++ -O3 -fPIC -c caller.cpp
g++ -O3 -fuse-ld=bfd -fPIC caller.o libxxx.so -o caller
./caller
g++ -O3 -flto -fPIC -c foo.cpp
g++ -O3 -flto -fPIC -c goo.cpp
g++ -O3 -fuse-ld=gold -fPIC --shared -o libxxx.so -Wl,--start-lib foo.o goo.o
-Wl,--end-lib
./caller
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